Fig. 1From: Predicting the outcome of plantar heel pain in adults: a systematic review of prognostic factorsGuide for adjustments to the quality of evidence for prognosis; This diagram is adapted from Huguet et. al (2013). * In this review, moderate level of evidence is the starting point for outcome prediction research or explanatory research aimed to identify associations between potential prognostic factors and the outcome (Huguet et. al., 2013)Back to article page